siftlode/frontend/src/components/NotificationCenter.tsx

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import { useEffect, useRef, useState, useSyncExternalStore } from "react";
import { createPortal } from "react-dom";
import { useTranslation } from "react-i18next";
import type { TFunction } from "i18next";
import { useQueryClient } from "@tanstack/react-query";
import { Bell, Eye, RotateCcw, Search, Trash2 } from "lucide-react";
import { api, type FeedFilters } from "../lib/api";
import {
clearAll,
dismiss,
getNotifications,
getUnreadCount,
markAllRead,
notify,
subscribe,
type VideoHiddenMeta,
type VideoWatchedMeta,
} from "../lib/notifications";
import { LEVEL_STYLE } from "./Toaster";
function relTime(ts: number, t: TFunction): string {
const s = Math.round((Date.now() - ts) / 1000);
if (s < 60) return t("notifications.time.justNow");
const m = Math.round(s / 60);
if (m < 60) return t("notifications.time.minutes", { count: m });
const h = Math.round(m / 60);
if (h < 24) return t("notifications.time.hours", { count: h });
const d = Math.round(h / 24);
return t("notifications.time.days", { count: d });
}
export default function NotificationCenter({
filters,
setFilters,
variant = "header",
}: {
filters: FeedFilters;
setFilters: (f: FeedFilters) => void;
variant?: "header" | "rail";
}) {
const { t } = useTranslation();
const notifications = useSyncExternalStore(subscribe, getNotifications, getNotifications);
const unread = useSyncExternalStore(subscribe, getUnreadCount, getUnreadCount);
const [open, setOpen] = useState(false);
const wrap = useRef<HTMLDivElement>(null);
const btnRef = useRef<HTMLButtonElement>(null);
const panelRef = useRef<HTMLDivElement>(null);
// Rail variant anchors the panel right + above the button (fixed, viewport coords) and
// portals it to <body> so it escapes the nav's backdrop-filter.
const [pos, setPos] = useState<{ left: number; bottom: number }>({ left: 0, bottom: 0 });
const qc = useQueryClient();
// Close when clicking anywhere outside the button + panel.
useEffect(() => {
if (!open) return;
function onDown(e: MouseEvent) {
const target = e.target as Node;
if (btnRef.current?.contains(target) || panelRef.current?.contains(target)) return;
if (variant === "header" && wrap.current?.contains(target)) return;
setOpen(false);
}
document.addEventListener("mousedown", onDown);
return () => document.removeEventListener("mousedown", onDown);
}, [open, variant]);
function toggle() {
if (!open && variant === "rail") {
const r = btnRef.current?.getBoundingClientRect();
if (r) setPos({ left: r.right + 8, bottom: window.innerHeight - r.bottom });
}
setOpen((o) => !o);
}
// Opening the center marks everything read.
useEffect(() => {
if (open) markAllRead();
}, [open, notifications.length]);
function locateHidden(meta: VideoHiddenMeta) {
setFilters({
...filters,
show: "hidden",
channelId: meta.channelId || undefined,
channelName: meta.channelName || undefined,
});
setOpen(false);
}
function revertState(
meta: VideoHiddenMeta | VideoWatchedMeta,
messageKey: "notifications.unhidden" | "notifications.unwatched"
) {
api
.setState(meta.videoId, "new")
.then(() => {
qc.invalidateQueries({ queryKey: ["feed"] });
qc.invalidateQueries({ queryKey: ["feed-count"] });
notify({ level: "success", message: t(messageKey, { title: meta.title }) });
})
.catch(() => {});
}
function renderPanel(el: JSX.Element) {
if (variant !== "rail") return el;
return createPortal(
<div style={{ position: "fixed", left: pos.left, bottom: pos.bottom, zIndex: 40 }}>
{el}
</div>,
document.body
);
}
return (
<div className="relative" ref={wrap}>
<button
ref={btnRef}
onClick={toggle}
title={t("notifications.title")}
className="relative p-2 rounded-lg text-muted hover:text-fg hover:bg-card transition"
>
<Bell className="w-5 h-5" />
{unread > 0 && (
<span className="absolute -top-0.5 -right-0.5 min-w-[16px] h-4 px-1 rounded-full bg-accent text-accent-fg text-[10px] font-bold grid place-items-center">
{unread > 9 ? "9+" : unread}
</span>
)}
</button>
{open &&
renderPanel(
<div
ref={panelRef}
className={`glass-menu w-80 max-w-[calc(100vw-2rem)] rounded-xl flex flex-col max-h-[70vh] animate-[popIn_0.16s_ease] ${
variant === "rail" ? "" : "absolute right-0 mt-2 z-30"
}`}
>
<div className="flex items-center justify-between px-3 py-2 border-b border-border">
<div className="text-sm font-semibold">{t("notifications.title")}</div>
{notifications.length > 0 && (
<button
onClick={clearAll}
className="flex items-center gap-1 text-xs text-muted hover:text-accent transition"
title={t("notifications.clearAll")}
>
<Trash2 className="w-3.5 h-3.5" />
{t("notifications.clear")}
</button>
)}
</div>
<div className="overflow-y-auto">
{notifications.length === 0 ? (
<div className="px-3 py-8 text-center text-sm text-muted">{t("notifications.empty")}</div>
) : (
notifications.map((n) => {
const { icon: Icon, color } = LEVEL_STYLE[n.level];
const needsAction = n.requiresInteraction && !n.dismissed;
const hidden = n.meta?.kind === "video-hidden" ? n.meta : null;
const watched = n.meta?.kind === "video-watched" ? n.meta : null;
return (
<div
key={n.id}
className={`flex items-start gap-2.5 px-3 py-2.5 border-b border-border/60 ${
needsAction ? "bg-accent/5" : ""
}`}
>
<Icon className={`w-4 h-4 shrink-0 mt-0.5 ${color}`} />
<div className="min-w-0 flex-1">
{n.title && <div className="text-sm font-semibold">{n.title}</div>}
<div className="text-sm break-words">{n.message}</div>
<div className="flex items-center gap-2 mt-0.5">
<span className="text-[11px] text-muted">{relTime(n.ts, t)}</span>
{needsAction && (
<span className="text-[10px] uppercase tracking-wide font-semibold text-accent">
{t("notifications.actionNeeded")}
</span>
)}
</div>
{hidden ? (
<div className="flex items-center gap-3 mt-1">
<button
onClick={() => locateHidden(hidden)}
className="flex items-center gap-1 text-accent text-sm font-semibold hover:underline"
>
<Search className="w-3.5 h-3.5" />
{t("notifications.findInFeed")}
</button>
<button
onClick={() => revertState(hidden, "notifications.unhidden")}
className="flex items-center gap-1 text-accent text-sm font-semibold hover:underline"
>
<Eye className="w-3.5 h-3.5" />
{t("notifications.unhide")}
</button>
</div>
) : watched ? (
<div className="flex items-center gap-3 mt-1">
<button
onClick={() => revertState(watched, "notifications.unwatched")}
className="flex items-center gap-1 text-accent text-sm font-semibold hover:underline"
>
<RotateCcw className="w-3.5 h-3.5" />
{t("notifications.unwatch")}
</button>
</div>
) : (
n.action &&
!n.dismissed && (
<button
onClick={() => {
n.action!.onClick();
dismiss(n.id);
}}
className="mt-1 text-accent text-sm font-semibold hover:underline"
>
{n.action.label}
</button>
)
)}
</div>
</div>
);
})
)}
</div>
</div>
)}
</div>
);
}